Woolen tape condenser



Dec. 19, c D E WOOLEN TAPE CONDENSER 2 Sheets-Sheet 1 Filed Nov. 20,1959 NVENTOR Car/eo" A flea/m 1951 c. D. BEAN 3,013,312

WOOLEN TAPE CONDENSER Filed Nov. 20, 1959 2 Sheets-Sheet 2 3,013,312WOOLEN TAPE CONDENSER Charles Detwiler Bean, Norristown, Pa., (106Hancock Ave., Colston, Montgomery County, Pa.) Filed Nov. 20, 1959, Ser.No. 854,450 3 Claims. (Cl. 19-151) The present invention relates tospinning on the woolen system and particularly to improvements in tapecondensers.

A purpose of the invention is to produce yarn which is more uniform incross-section by spinning on the woolen system.

A further purpose is to correct for unevenness in the web coming fromthe finisher card in spinning on the woolen system.

A further purpose is to supply yarn of uniform crossscction from cardswhich produce a web which is thicker in the middle and thinner near theedges.

Further purposes appear in the specification and in the claims.

In the drawings I have chosen to illustrate one only of the numerousembodiments in which the invention may appear, selecting the forms shownfrom the standpoints of convenience in illustration, satisfactoryoperation, and clear demonstration of the principles involved.

FIGURE 1 is a fragmentary diagrammatic side elevation of a finisher cardand tape condenser in accordance with the invention.

FIGURE 2 is a fragmentary front elevation of the tape condenser of theinvention.

FIGURE 3 is a fragmentary axial section of one of the divider rolls atthe point at which the width of the grooves and lands changes.

Describing in illustration but not in limitation and referring to thedrawings:

In spite of the efforts made to produce a web which comes off the doifercylinder of a finisher card which is uniform in thickness at variousparts of the width, there is a pronounced tendency for the Web to bethick in the middle and thin near the edges.

This condition prevails in spite of various card adjustments in manywoolen spinning mills.

As a consequence the yarn which is obtained from the ropes or sliversnear the ends of the tape condenser is likely to be thinner or ofsmaller cross-section than the yarn obtained from the ropes or sliverswhich come off near the middle.

This is one of the reasons which leads to the prevalence of streaks inlarge expanses of carpet, especially in large living rooms and hotellobbies.

The present invention is concerned with the improvement in the qualityof yarn so that it will be of more uniform cross-section.

In accordance with the invention the tape condenser construction ismodified, particularly in respect to the dividing rolls, the carrierrolls and the tapes themselves. The modification occurs only in thegrooves and lands of the rolls and the tapes which are concerned withthe production of good yarn, and does not change the grooves and thetapes which are concerned with carrying 01f waste.

In accordance with the invention, for any groove and tape width which isemployed at the middle of the dividing rolls, the width of the grooveand tape toward the ends is made wider. Good results are obtained by anincreased width toward the ends which is in the range of 10 to 20percent more than the width near the middle. It has also been found thatthese wider grooves and tapes at each end should preferably extend overabout one quarter of the total length of the dividing rolls and carrierrolls.

In order to simplify the Present discussion no efiort will be made todescribe the standard tape condenser and for nited States Patent ice adescription of the usual tape condenser the reader is referred to Davis& Furber Machine Company General Catalogue G80 (1949) particularly pages36 to 39 and Whitin Machine Works Component Parts Catalogue for TapeCondenser (1950) pages 1 to 117 inclusive.

As well known in the art, and as best shown in FIG- URE l, finisher card20 has a doller cylinder 21 rotating in the direction of the arrow anddischarging a web 22, over a guide roll 23.

The web passes between a suitably driven top dividing roll 24 (FIGURES 1and 2) and a bottom dividing roll 25 turning oppositely so that theiradjoining surfaces move together and progress the web forward. Thedividing rolls have cooperating annular grooves 26 and lands 27 so thatthe groove on one roll fits into the land of the other dividing roll aswell known in the art and separates the Web 22 into ropes. Riding in thebottom of each groove of'the dividing roll throughout the length of theroll which makes good sliver is a tape 28, the tape 23 in the particulargroove passing around one dividing roll, around one of the smoothcarrier rolls 30 at the top upper middle, lower middle or bottom as thecase may be, and

then around a suitably driven grooved carrier roll 31 at the top orbottom as the case may be, and back to the appropriate dividing rollaround idling tension roll 32, which is also a guide roll for the tapeentering the dividing rolls as Well known. Thus, there are fourdiiferent tape paths provided in a common type of tape condenser as wellknown in the art, and the tapes carry olf slivers 33 to rub aprons 3 4which turn around apron rolls 35 which oscillate axially back and forthas well known in the art in connection with rub motions and as describedin the publications above referred to.

The sliver passes through guides 36 from drums 37 to take-up spoolsSS aswell known in the 'art.

The tapes 28 are subjected to pressure by grooved guide rolls 29 whichare in front of the respective dividing rolls and out of line with theweb 22.. There are two sets of dividing roll tapes making good sliver,the narrower tapes being in the center section of the dividing roll andthe wider tapes adjoining the narrower ones on either side. The tapesare under pressure as well known in the art.

It will of course be evident that the dividing rolls, can rier rolls,and guide rolls turn on suitable bearing and are driven by suitabledrives not shown.

In accordance with the invention the widths of the cooperating groovesand lands of the dividing rolls and the corresponding, guide rolls andpressure rolls and tapes are not uniform throughout the width of themachine. but the grooves, lands and tapes are relatively narrowin themiddle and relatively wide toward the ends.

It will of course be understood that the actual width of the grooves andlands and the tapes depends upon the weight of yarn being produced, butthe important thing from the standpoint of the present invention is notthe actual width but the relative width.

As illustrated best on FIGURES 2 and 3, the grooves 26, the lands 27 onthe dividing rolls and similarly on the grooved carrier rolls andpressure rolls and the widths of the tapes in the portion of the rollsnear the middle are relatively narrow, by way of example 0.648 inch.

The widths of the grooves 26' and the lands 27' toward the ends of therolls where good sliver is made and the corresponding lands and grooveson the guide rolls and pressure rolls and the tapes 28' toward the endsof the rolls are wider to the extent of 10 to 20 percent and by way ofexample may be 0.754 inch.

grooves and lands and tapes extends preferably about one quarter thelength of the rolls.

There are at the extreme ends of the rolls as in the prior art wastetapes 40 which occupy relatively wide groove and land spaces 41 as wellknown in the art and which do not produce good sliver.

In the above discussion, the widths of the grooves and lands are givenas being the same, although it will of course be evident that the landswill be slightly narrower to provide end clearance as well known, andthe tapes will also usually be slightly narrower than the grooves.

In accordance with the invention, it has been found that it is possibleto greatly even out the variations in yarn weight per unit length, sothat streaks in carpets and the like and other defects in fabrics byvariation in yarn will be reduced or largely eliminated.

It will of course be evident that the question of whether the groove,land and tape width increases toward the ends of the dividing rolls intwo steps or in more than two steps is unimportant, in accordance withthe principles of the invention.

In view of my invention and disclosure variations and modifications tomeet individual whim or particular need will doubtless become evident toothers skilled in the art, to obtain all or part of the benefits of myinvention Without copying the structure shown, and I therefore, claimall such insofar as they fall within the reasonable spirit and scope ofmy claims.

Having thus described my invention what I claim as new and desire tosecure by Letters Patent is:

1. In woolen spinning machinery, a tape condenser having cooperatinggrooved dividing rolls, grooved carrier rolls which rotate on axesparallel with the dividing rolls and tapes threaded through thecorresponding grooves of the dividing rolls and carrier rolls, in whichthe widths of the grooves making good sliver on the dividing rolls andthe corresponding grooves on the carrier rolls and the correspondingtapes are relatively narrow near the middle of the rolls, and the widthsof the same near the ends of the rolls are relatively wider.

2. A tape condenser of claim 1, in which said widths adjacent the endsare between ten and twenty percent wider.

3. A tape condenser of claim 2, in which said greater widths near eachend are present over approximately onequarter of the roll length.

Cochran Dec. 8, 1896 Knight Dec. 7, 1937

